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Home Brew Forums > Wine, Mead, Cider, Sake & Soda > Wine Making Forum > Do yeast like the dark?
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Old 04-04-2011, 07:56 PM   #1
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Default Do yeast like the dark?

Why do they say keep your wine in a dark place??

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Old 04-04-2011, 08:03 PM   #2
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Yeast are vampires.

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Old 04-04-2011, 08:04 PM   #3
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But seriously, light can cause skunking in alcohol.

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Old 04-04-2011, 08:05 PM   #4
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Yeast, like many of us, do their best work in the dark...

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Old 04-04-2011, 09:27 PM   #5
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It's just that light is a source of energy that causes chemical changes, the sort you don't want. Heat is the same, you should always store your wine in cool conditions if possible.

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Old 04-04-2011, 09:29 PM   #6
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UV light does nasty things to isomerized alpha acids (aka skunked beer), and I'm sure it does bad things to wine too.... I'm not sure what ...

Plus, dark places are usually more temperature stable.

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Old 04-04-2011, 09:33 PM   #7
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"Light struck" wine changes color and flavor. It's not usually a big deal for whites, that's why they are in clear bottles while reds are in green bottles. But you'll notice that even with whites, light can cause a "sherry" flavor and a few color changes.

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Old 04-04-2011, 10:33 PM   #8
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I didn't know this before I started my first batch of wine. I left 6 gallons age for 2 months in my glass carboy under uv lights 24/7. After reading about light being bad I covered the carboy with a towel for my second batch of the same wine, they both taste the same. I'm not advising you to leave it in the light but I'm just saying from what I've experienced light does not destroy the wine

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Old 04-04-2011, 10:38 PM   #9
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Thanks everyone....

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Old 04-04-2011, 10:42 PM   #10
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They also like Barry White music too...the better to get down and reproduce to.

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